RK309 Dual Sensor Curtain Motion Detector With Directional Immunity has been Designed Special for Residential Environments. It has Strong Ability to Catch Signal and the False & Lost Alarm Rate is Low. Low Power Consumption and True Temperature Compensation. High Technology and Smart Manufacture and Elegant Appearance. Stable Performance and Long Use Life. Special Lenses Design for Full Orientation. Equipped with RA93 Swivel Bracket for Easy Wall or Ceiling Mounting. Main Features Coverage is 8M Dual Passive Infrared Detective Technology Microprocessor Design Improves False Alarm Immunity True Temperature Compensation Dual Polarity Pulse Count is Adjustable Resist Interference of white Light Power Consumption is Low High RFI Immunity for False Alarm Prevention（25V/m --1GHz） Professional Optical Pigmented Lenses Installed on Wall, Ceiling or/and Corner Mounting Suitable to Swivel Brackets Convenient for Installation Pulse Count is Selectable Resist Fluorescent Interference Memory and Form-C Relay Specification Operating Voltage: 9-16VDC Current: 15mA Contacts of Alarm: NC, 12VDC, 100mA max Contacts of Tamper: NC, 12VDC, 100mA max Time to Alarm: 2.2s Time to Warm-up: 2 minutes RFI characteristic: 25V/m at 10Mhz to 1Ghz Operating Temperature: -10 DC to 50 DC Storage Temperature: -20 DC to 60 DC Size: 95*65*28mm